00286nam a2200109Ia 4500082002100000100002700021245006300048260003500111300002000146500000500166700000500171  a020.182bR255.QM  aRavichandra Rao, I. K.  aQuantitative methods for library and information scienceb  aNew DelhibWiley Easternc1983  axi, 271p. Index  a  a